Motor control apparatus, motor-driven apparatus, method of controlling motor and non-transitory computer-readable recording medium storing a computer program
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United States of America Patent
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Mar 21, 2017
Grant Date -
Jan 22, 2015
app pub date -
Jul 15, 2014
filing date -
Jul 19, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
The motor control apparatus controlling rotation of a brushless motor includes a controller to control an angular velocity of the motor, and a load torque calculator to calculate a load torque at which the motor drives a driven member, by using a detection signal output from a rotation detector to output the detection signal in response to the rotation of the motor. When the motor drives the driven member toward a target stop position, the controller calculates a deceleration rotation amount, which is a remaining rotation amount of the motor at start of deceleration of the motor from its drive state that is one of an acceleration state and a constant velocity state, and controls the angular velocity of the motor on a basis of the deceleration rotation amount. The controller calculates the deceleration rotation amount by using the load torque calculated in the drive state.
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